345175309 has 8 divisors (see below), whose sum is σ = 348226200. Its totient is φ = 342136896.

The previous prime is 345175307. The next prime is 345175321. The reversal of 345175309 is 903571543.

It can be written as a sum of positive squares in 4 ways, for example, as 176305284 + 168870025 = 13278^2 + 12995^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345175309 - 2¹ = 345175307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345175301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57519 + ... + 63235.

It is an arithmetic number, because the mean of its divisors is an integer number (43528275).

Almost surely, 2^345175309 is an apocalyptic number.

It is an amenable number.

345175309 is a deficient number, since it is larger than the sum of its proper divisors (3050891).

345175309 is a wasteful number, since it uses less digits than its factorization.

345175309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6239.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 345175309 is about 18578.8941813015. The cubic root of 345175309 is about 701.4766847107.

The spelling of 345175309 in words is "three hundred forty-five million, one hundred seventy-five thousand, three hundred nine".